Waste bin



FIG. 1 is a top plan view of a waste bin showing my new design;

FIG. 2 is a front elevational view thereof, with the left side elevational view, the right side elevational view, and the rear elevational view being identical thereto; and,

FIG. 3 is a top front perspective view thereof, with the top left side perspective view, the top right side perspective view, and the top rear perspective view being identical thereto. 

The ornamental design for a waste bin, as shown and described. 